/*
 * Copyright (C) 2009  Sylvain Maucourt (smaucourt@gmail.com)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 *
 */
package net.sylvek.where.server;

import com.google.gson.JsonObject;

import net.sylvek.where.entity.PMF;
import net.sylvek.where.entity.UserEntity;

import java.io.IOException;
import java.util.Date;

import javax.jdo.JDOObjectNotFoundException;
import javax.jdo.PersistenceManager;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@SuppressWarnings("serial")
public class Update extends CachedServlet {

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
    {
        String uid = req.getParameter("uid");
        String name = req.getParameter("name");
        String online = req.getParameter("online");
        double lat = Double.valueOf(req.getParameter("latitude"));
        double lon = Double.valueOf(req.getParameter("longitude"));

        PersistenceManager pm = PMF.get().getPersistenceManager();

        UserEntity user = null;
        try {
            user = pm.getObjectById(UserEntity.class, UidHelper.getInternalUid(uid));
        } catch (JDOObjectNotFoundException e) {
            user = new UserEntity(UidHelper.getInternalUid(uid));
        }

        try {
            user.setName(name);
            user.setIp(req.getRemoteHost());
            user.setLat(lat);
            user.setLon(lon);
            user.setOnline(Boolean.valueOf(online));
            user.setUpdate(new Date());
            user.setLocationHash(GeoHash.hash(lat, lon));

            pm.makePersistent(user);

            JsonObject success = new JsonObject();
            success.addProperty("success", true);
            resp.getWriter().print(success.toString());
        } catch (Exception e) {
            JsonObject error = new JsonObject();
            error.addProperty("success", false);
            error.addProperty("error", e.getMessage());
            resp.getWriter().print(error.toString());
        } finally {
            pm.close();
            resp.getWriter().flush();
        }
    }
}
